Part C: Supporting Documents Appendix A: Flood and Floodplain Management Flood Management Flood management is used in the broad context of Emergency Management as described in the Emergency Management Manual Victoria (EMV 2016). The objectives are to ensure that the following components of emergency management are organised to facilitate planning, preparedness, operational coordination and community participation: Prevention: the elimination or reduction of the incidence or severity of emergencies and the mitigation of their effects, which are part of the work plans and Strategy Action Plan requirements under the under the Emergency Management Act 2013. Response: the combating of emergencies and the provision of rescue and immediate relief services. Note that the Victoria State Emergency Service is the combating agency for floods. Recovery: the assisting of people and communities affected by emergencies to achieve a proper and effective level of functioning. The Figure A-7 below (adapted from the Emergency Management Manual 2016) shows this model as it relates to flood management. It should be noted that prevention, response and recovery activities overlap. These are not necessarily phases or stages of emergency management, as the relevant activities are carried out as needed and not always sequentially. PREVENTION Prevention and RESPONSE ACTIVITIES Response ACTIVITIES • Risk Management • Warnings Rescue • Legislation Flood • Regulation Temp. flood structures Searches • Land use controls • Enforcement • Planning • Preparedness • Community Awareness • Rebuilding • Evacuation • Training • Restoration • Relief centres • Community action • Temporary • Advocacy accommodation RECOVERY AND • Registration PREVENTION RECOVERY RESPONSE ACTIVITIES AND • Counselling RECOVERY • Personal support PREVENTION • Material aid RESPONSE AND • Community programs RECOVERY • Financial assistance Figure A-7: Flood Management in the Emergency Management Context 80 DRAFT Goulburn Broken Regional Floodplain Management Strategy 2018-2028 Floodplain management Floodplain management comprises the prevention activities of flood management together with related environmental activities as illustrated in Figure A-8 (adapted from Victoria Flood Management Strategy 1998). The significance of the distinction between flood management and floodplain management is that various lead agencies, such as CMAs, have key roles in floodplain management activities while other agencies such as Emergency Management Victoria, Victoria State Emergency Service and Department of Health and Human Services have key roles in response and recovery activities. Floodplain Management PREVENTION RESPONSE ACTIVITIES ACTIVITIES Activities Environmental Environmental RECOVERY Flood Management Prevention Activities Environmental Activities • Victorian Floodplain Management Strategy Preservation and Enhance of: • Regional Catchment Strategies • Flora & Fauna • Regional Floodplain Management Strategies • Wetlands • Floodplain Management Plans • Landscape interest areas • Best Practice Guidelines • Traditional Owner interest areas • Flood Information & Maps • Archaeologic interest areas • Flood Mitigation Works • Flood conveyance • Land Use Planning Controls • Flood storage • Building Controls • Stream stability • Flood Warning • Water quality • Community Awareness • Education & Training • Research Figure A-8: Floodplain Management in the Flood Management Context DRAFT Goulburn Broken Regional Floodplain Management Strategy 2018-2028 81 Appendix B: Consultation Material to Promote Stakeholder Discussions and Input Consultation material was prepared for stakeholder consultation in two formats: firstly by local government areas (for urban centres), and secondly by one single whole of region area (for rural areas along large river/creek reaches). A stocktake of past studies and achievements was summarised for urban centres and rural areas, including an assessment of information gaps and potential flood risks in tabular format. A first “best” assessment rankings were applied to the four tools used to enhance flood resilience (i.e. Flood mitigation, Total Flood Warning System, Land-use Planning and Municipal Flood Emergency Plans) The same background wording was applied to the eight local government/regional areas with locality plans that was distributed at the 15 community workshops and placed on the Goulburn Broken CMA’s website, allowing opportunities for submissions. Below is a copy of the introductory wording used for each local government/regional area followed by specific tables providing information on rankings, stocktakes and priorities. Flood risk assessment and draft priority rankings for stakeholder discussion Community input is needed to prioritise where flood knowledge needs to be improved through flood studies and flood mapping in (LGA/region) and to determine actions to reduce the risk of flooding. This summary provides a list of studies for towns in (LGA/region) and draft priorities for flood mitigation actions. How to read the table below The column to the left ranks flood risks (1: low, and 5: high), taking into account the possible damage from different sized floods and how often they are expected to happen. The measure of the yearly average cost of floods is known as Annual Average Damage (AAD). The two columns in the centre of the table show: • Flood studies that have been (or soon will be) completed for towns in your local government area. • Recommendations from these studies that have been implemented (or are under way) and other relevant comments or observations. The columns to the right of the table show DRAFT priority rankings [Low (L), Medium (M), High (H) and No Action (-)] for actions that reduce risk of flooding such as: • Mitigation works (e.g. levees, retardation basin, and floodways) • Flood warning systems (e.g. flood watch, flood warning broadcasts and action plans) • Land use planning (e.g. flood overlay control in planning schemes) • Municipal flood emergency plans (developed by council, VICSES and other agencies with flood-management responsibilities) Please review this summary and provide feedback by: • attending one of the community sessions being held across the catchment during February; or • completing the feedback form on the website www.gbcma.vic.gov.au 82 DRAFT Goulburn Broken Regional Floodplain Management Strategy 2018-2028 Terminology Annual Average Damage (AAD), expressed in dollar terms, is the average damage per year that would occur in a particular area from flooding over a very long period of time. This provides a basis for comparing the economic effectiveness of different projects. For more information on risk assessment methodology, please see the Regional Floodplain Management Strategy section of the website. Annual Exceedance Probability (AEP) is the likelihood of occurrence of a flood of given size or larger occurring in any one year. FloodSafe is a whole community program designed to prepare and empower the community with the skills and knowledge to appropriately prepare for, respond to, and recover from floods. Municipal Flood Emergency Plan (MFEP) is a plan prepared and maintained by each municipal council, under the Emergency Management Act 1986, which identifies the municipal resources available, and how they are to be used, for flood prevention, response and recovery. Regional Floodplain Management Strategy (RFMS) (under development) will replace the previous regional strategy (2002) and aims to help manage flood risk by seeking community input to prioritise where flood knowledge needs to be improved. The priorities will be detailed in a rolling three-year regional work plan that can be used by local communities to secure funding for various flood management activities. Specific Local Government/Regional area tables and maps DRAFT Goulburn Broken Regional Floodplain Management Strategy 2018-2028 83 Benalla Rural City Council Figure 1. Benalla Rural City Council area showing towns and planning scheme flood overlay controls 84 DRAFT Goulburn Broken Regional Floodplain Management Strategy 2018-2028 Table 1. Benalla Rural City risk assessment (ranking 1: low, and 5: high) Draft priority rankings for stakeholder discussion: Low (L), Medium (M), High (H) and No Action (-) (for urban centres) Summary of implemented study recommendations Name AAD Summary of past and existing studies (Other comments) System Municipal Flood Emergency Plans Emergency Mitigation Works Land Use Planning Total Flood Warning • Documentation & Review of the 1993 Victorian • No flood zone or overlay controls exist Floods Volume 4 Broken River Catchment Floods • Upload mapping products from study into (Hydro Technology, 1995) planning scheme • Granite Creek Regional Flood Study (Water • Prepared 1% flood contour in Flood Atlas online Baddaginnie 2 - L H H Technology, nearing completion) • Update MFEP • Consider possible flood warning arrangements. Likely to rely on BoM flood warning products such as Flood Watch • Benalla Floodplain Management Study (SR&WSC, • 1% AEP flood levels declared 1984) • Total Flood Warning System implemented • Benalla Flooding Investigation: Flood of 3-4 • Benalla Water Management Scheme October 1993 (Willing & Partners, 1994) Implemented including vegetation thinning. • Documentation & Review of the 1993 Victorian Additional installation of railway culverts proved Floods Volume 4 Broken River Catchment Floods ineffective and impracticable and on hold (Hydro Technology, 1995) indefinitely • Total Flood Warning System (CT Management,